Wood-shaving machine



c. A. WAKEMAN.

WOOD SH-AVING MACHINE.

APPLICATION HLED DEC.3|. 191B.

1 ,305,42 1 Patented June 3, 1919-.

3 SHEETS-SHEET I.

INVENTOR ATTO R N EY C. A. WAKEMAN.

WOOD SHAVING MACHINE. APPLLCATION HLED 0m31.191s.

Patented June 3, 1919.

3 SHEETS-SHEET 2.

RW WY E. 7Bn .Mw im.

WITNESSES I me [wams grens co Haro L A C. A. WAKEMAN'. WOOD SHAVINGMACHINE.

APPLICATION FILED Dc.31.191s.

3 SHEETS-SHEET 3...

ATTOR N EY mr mams Fermes sa. Maremma., wfxsnmcrow. n

CHARLES A. WAKEMAN, OF OSHKOSH, WISCONSIN. i

woon-sHAvING MACHINE.

Specification of Letters Patent. y

Patented June 3, 1919.

Application filed December 31, 1918. Serial No. 269,153.

To all whom t may concern Be it known that I, CHARLES A. WAKE- MAN, acitizen of the United States, and resident of Oshkosh, in the county ofl/Vinnehago and State of Wisconsin, have invented certain new and usefulImprovements in lrVood-Shaving Machines; and I do hereby 'declare thatthe following is a full, clear,

and exact description thereof.

My invention relates to new and useful improvements in machines forcutting thin knife-edged shavings or the like, of that type whereinthere is provided a rotary knife head and means for feedingwork'against` one side of the knife head and simultaneously rotating thework. Y

It is in general the object of my invention to simplify and otherwiseimprove the structure and to increase the efficiency of machines of thischaracter. v It is more particularly my object to insure an even feedingmovement of the work to the knives of the cutting head, and to maintaina fairly constant relativespeed ofr rotation of the knife blades withrespect t'o the speed of travel of the peripheral surface of the log,iny view ofthe reduction of the log by cutting, and the consequentdiminution of the diameter of the log. It is more particularly my objectinthis connection to provide an arrangement for automatically varyingthe; gear ratio between the cutter drive shaft and a shaft for feedingthe work, to compensate for the reduction in diameter ofthe work.

A further object resides in the provision of an arrangement for`automatically halt-V ing feeding movement of the work toward the cutterhead, and for readily instituting said feeding movement at any'desiredposition of the work carrying means with respect toy the cutter head.

A still further object resides in the provision of a machine of thischaracter wherein a pair of logs may be held against opposite portionsof the cutter head to utilize said cutter head to a maximum extent.

With the above and other objects and advantages in view, which will beapparent as the description proceeds, my invention Vresides in the novelfeatures of construction, combination and arrangement of parts ashereinafter more particularly described and defined by the appendedclaims.

In the accompanying drawings:

Figure 1 is a side elevational view of a wood shaving machine embodyingmy invention, portions of the log feeding mechanism being broken away.

F ig. 2 is a plan view of the machine.

Fig. 3 is a sectional view through the machine on, a plane indicated bythe broken line 3-3of Fig. 2.'

Referring now more particularly to the accompanying drawings, there isprovided a main frame including an upper pair of side sills 10 and alower pair of side sills 11 connected with the upper sills by verticaland horizontal end bars 12, the main frame being supported on legs *13.yA main shaft 14 extends longitudinally through the frame, one end of theshaft carrying belt pulleys 15 while the other end of the shaft carriesa circular cutting head 16 of type common in machines of this character,and provided with radial knife blades 17 projecting from its outer face.For utilizing the cutting action'of these blades both above and belowthe rotativeV similar channel plates 21 engaged on outturned trackprojections of of mainframe sills 11.

Inasmuch as the work carriages and the the lower pair operating means ofthe carriages are identical, but` onewill be described specifically, thecorresponding numerals applying to both carriages. Each carriage is fprovided atfitsfforward end with outwardly and then forwardly extendingarms '22- and-23 re- Y spectively embracing the cutter head 16. A

Screw 24 is transversely threaded in the arm 22, carrying a point 25engageable with one end ofthe log or block to be cut, while a mandrel 26is mounted` in the outer end of the other arm 23 forengagement with thelog or block, this mandrel being driven by a bevel gear connection 27with a shaft 28 which is driven by a -bevel gear connection 29 with aVshaft 30 driven in turn by a bevel gear connection 31 with a shaft 32journaled longitudinally on the carriage. The shafts 28 and ico 30 arecarried by the angularly disposed portions of the arm 23, to thugprovide clearance for movement yof the carriages with "respect to thecutter head to feed work theretoward. The shaft 32 is d riven by a crownpulley 33 which 'is sp'lined thereon and which is driven by a belt 34trained about a pulley on the main sha-ft 14. The hub of the pulley 33is grooved to rece-ive the bearing portion of a. bracket 35 projectingfrom the main frame to hold the pulley Aagainst movement out ofalinement with the pulley of the main shaft, said bracket 35 and thepulley belt projecting through the cutaway intermediate yportion vof thecarriage :whereby movement of the carriage is permitted withoutinterference with continuous driving operation of the various shaftscarried thereby.

F or feeding the carriages rearwardly of thejbodyframe, to thus :feedwork carried :by their arms toward the cutter head in amannerwhereby'the :speed 'of feeding movementJ is automatically progressivelyincreased to compensate for fthe ,progressive decrease of peripheraly'surface of the work, a counter shaft 36 is mounted in bearings 37projecting ylaterallyfrom the Imain frame, and a parallel screw shaft 38is-also :mounted on the side of the main frame and is engageable by nutsections 39 carried by :the carriages. The shaft .36 andscrew shaft 38are connected k-by a reducing :train of gears 40, of that type includingseries -of double gears loose on thc Ashaft and meshing with end gearsfixed on the shafts, although any other preferably` conventionalreducing drive v may be employed. IAfoonic-al ybelt pulley 41 iisfixed-onthe main Idrive sha-ft 14, having its smaller.enddisposedforwardly anda conical pulley 142i@ disposed on theshaft 361having itssmaller .end disposed rearwardly of the machine. A belt v43 is:traine-d. about these pulleys and is engaged by Ashifter arms 44dependingzfrom the upper carriage. Thus the speed vimparted to the"carriage feeding mechanism is automatically increased upon rearwardmovement of the carriages, and this increasev of-speed is proportionalto the decrease of peripheralarea of the-work as it is cutfthusinsuringzaneven cutting action on the workrthroughout the entireoperation, andatthe Sametime affording a positive feed fortheworkagainst the cutting blades.

The nut-sections 39 carried by the carriages are-in the form ofA arcuatehead portions providedwith thread sections engageable with threads ofythe screw shaft. 38V and these head 'portions are lcarried onl shanks 45which are slidable in transverse dove-tail channelways in blocks46 atthe sides ofthe carriages whereby the-nutsections maybe shifted from thescrew shaft-to stop the feeding action andto-permit a rapid outwardshifting movement of the carriages to initial position. In the presentconstruction, these nut sections are operated simultaneously by an anglelever 47 having one arm pivoted to the channel block 46 of the uppercarriage and having its other arm extended upwardly to form a handle,the angle portion of this lever being pivoted to the. shank 45 of theupper nut section and pivoted to a link 48 which is in turn pivoted to alever 49 pivotally connected with the lower channel block 46 and theshank 45 of the lower nut section. Thus rocking movement of the lever 47will procure engagement or disengagement of the nut sections, the leverbeing normally locked in position holding the nut sections 1inengagement with the screw shaft by a pawl 50 pivoted on vthe uppercarriage and resiliently urged to engage the lever by aspring 5l. rThelever is resiliently urged against the locking action of .this pawl 4bya spring 52, and to control movement of Qthe lever from the front endofthe machine, a. rod` 53 extends forwardly from Athe upper endlof Ythelever, being guided in an upstand-V ing eye 54 on the carriage, andterminates in a suitable handle grip forwardly of thecutlter head 116.

For automatically releasing the nut sections at a desired inward Vlimitof feeding movement of the carriages, a cam projection 55 is carried 'onan arm vupstanding on and laterally offset from the rear ofthe mainframe and vthis cam portion is `en-A gageable with an abutment pin 56 onIthe lever pawl 50-to rock said-pawl against fthe action of itsspring'l.

yI Ihave thus provided a .simple and efficient machine for cuttingV'thin yknife-edged shavings orthe like, which is automatic in operationwith the exception of 4resetting the feeding carriages and securing:fresh work material thereto. Y

illVhile I have shown a preferred embodiment ofmy invention, it will-beappreciated thatfvarious changes and modifications of structure may ibe,resorted to without departing in any manner from the spiritof theinvention, and that so far as certain phases of. the inventionr areconcerned, butua single carriage may beemployedforrholdingwork'material. y

lThat is claimed is:

l. A machine of the class described'incl-u'ding avmainfframe, a rotatingknife head carriedfby the main frame, a pair of carriages slidablycarriedby 'themain iframe, means carried by said carriages for holdingwork lfor engagement by opposite portions of the knife'head, a drivenscrew shaft, and nut sections carried; by the carriagesl and engageablewith the screw shaft.

72. A machine of the class described'including a main frame, a rotatinggknife head carried by the main frame, a pair of carriages slidablycarried by"` the main frame, means carriedby said carriages for holdingwork for engagement by opposite portions of the knife head, a drivenscrew shaft, nut sections carried by the carriages and engageable withthe screw shaft, and lever means connecting the nut members forprocuring simultaneous movement thereof.

3. A machine of the class described including a main frame, a driveshaft carried by the main frame, a knife head on said drive shaft, acarriage slidable on the main frame, outwardly and forwardly extendingarms on the carriage embracing the knife head, means at the f ree end ofsaid arms for holding work, means carried by the carriage for rotatingthe Work held by said arms, and means for moving the carriage to feedwork toward the-cutter head.

4. A machine of the class described including a main frame, a driveshaft carried by the main frame, a knife head on said drive shaft, acarriage slidable on the main frame, means carried by the carriage forholding work to be engaged by the cutter head, a shaft on the carriage,means operable by said carriage shaft for rotating the work, a pulleysplined on the shaft, a bearing bracket for said pulley carried by theImain frame, and a drive connection between'- said pulley and the firstnamed shaft.

5. A machine of the class described including a main frame, a driveshaft carried by the main frame, a knife head on said drive shaft, acarriage slidable on the main frame, outwardly and forwardly extendingarms on the carriage embracing the knife head, means at the free ends ofsaid arms for holding vwork including a mandrel, and means for drivingsaid mandrel to rotate the work comprising a shaft mounted on thecarriage and extending longitudinally7 of its direction of slidingmovement, a splined drive connection for said shaft, and a pair of gearconnected shafts carried by one of.

the carriage arms and having gear connection respectively with the saidlongitudinal shaft and the mandrel.

In testimony that I claim the foregoing I have hereunto set my'hand atMilwaukee, in the county of Milwaukee and State of Wis- CHARLES A.WAKEMAN.

A Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

